Please check to see if there is a rest button or switch or even at the main breaker on the main control at the boiler.

Please let me know, if not the main board has likely failed and will need to be replaced.

its not difficult and I will assist you with that if you need me. Also I can locate a good source for that if you don't have a local supplier for it;-)

But Since this question may continue for some time, if you will rate my service as good or betterbefore you close this window, the system here will allow me to schedule free follow ups with youso your question wont close or time out and you can contact me anytime at no additional cost.Thank youTech Michael

There is power to the main terminal block, then power through to one of the six pin red pump plugs, and then power to the number nine pin on t stat. There is no power at the pump or the gas valve connections.

I'm sorry I don't know what you mean by main control board. All there is is the mains power switch on the wall from a fused spare, which leads into an overidden programer, then the power goes into the terminal block which then goes into the t stat and then through to the pump. The loss of power occurs at the t stat where there is power going in but none coming from it.

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